X3530

EULER LINE INTERCEPT OF LINE X15X_3411

< A B C >: Reference Triangle △ABC < M_a M_b M_c >: Medial Triangle △M_a M_b M_c [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 546 }: Euler Line { 2, 3 }: Euler Line { 15, 3411 }: Central Line L(15, 3411) { 16, 3412 }: Central Line L(16, 3412) { 1385, 3244 }: Central Line L(1385, 3244) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) M_a = Midpoint M_a of BC (0.8061, 0.2999) M_b = Midpoint M_b of CA (0.3061, 0.2999) M_c = Midpoint M_c of AB (0.5000, 0.0000) X_2 = CENTROID (0.5374, 0.2000) X_546 = MIDPOINT OF X(4) AND X(5) (0.5842, 0.3223) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_15 = 1st ISODYNAMIC POINT (0.5519, 0.1878) X_3411 = 1st BROCARD-KIEPERT-FERMAT CUSP (0.7746, 0.4761) X_16 = 2nd ISODYNAMIC POINT (1.8453, 2.3239) X_3412 = 2nd BROCARD-KIEPERT-FERMAT CUSP (0.5716, 0.2332) X_1385 = MIDPOINT OF INCENTER AND CIRCUMCENTER (0.5357, 0.1677) X_3244 = REFLECTION OF X(10) IN X(1) (0.6224, 0.2833) X_3530 = EULER LINE INTERCEPT OF LINE X(15)X(3411) (0.5140, 0.1388) A B C Ma Mb Mc X2 X546 X3 X15 X3411 X16 X3412 X1385 X3244 X3530 (a, b, c) = (5, 6, 7) | AB = 1

X3530 (EULER LINE INTERCEPT OF LINE X15X_3411) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3530 = EULER LINE INTERCEPT OF LINE X_15X_3411."""

        from __future__ import annotations

        from pathlib import Path

        import sympy.geometry as spg
        from geometor.model import Model

        from geometor.etc.ops import (
            central_line,
            centroid_of,
            circumcenter_of,
            complement,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03530(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3530 = EULER LINE INTERCEPT OF LINE X_15X_3411 on reference triangle ABC."""
            X_546 = eval_trilinear_point(model, A, B, C, '3*cos(B - C) - 2*cos(A)', ID="X_546", classes=["center"])
            X_3530 = complement(model, A, B, C, X_546, ID="X_3530", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            central_line(model, X_2, X_3, 2, 3)
            X_15 = eval_trilinear_point(model, A, B, C, 'sin(A +  pi  /3)', ID="X_15", classes=["center", "incident"])
            X_3411 = eval_trilinear_point(model, A, B, C, '(cos(A) - 2*sin(B)*sin(C) - 3*cos(A + pi  /3))', ID="X_3411", classes=["center", "incident"])
            central_line(model, X_15, X_3411, 15, 3411, incident=True)
            X_16 = eval_trilinear_point(model, A, B, C, 'sin(A-  pi  /3)', ID="X_16", classes=["center", "incident"])
            X_3412 = eval_trilinear_point(model, A, B, C, '(cos(A) - 2*sin(B)*sin(C) - 3*cos(A - pi  /3))', ID="X_3412", classes=["center", "incident"])
            central_line(model, X_16, X_3412, 16, 3412, incident=True)
            return promote_point_to_top(model, X_3530)


        def build_model(
            sides: tuple[float, float, float] = (5.0, 6.0, 7.0),
            show_guides: bool = False,
        ) -> Model:
            """Build a `geometor.model.Model` for X_3530 on the given reference triangle."""
            model = create_model('X_3530 = EULER LINE INTERCEPT OF LINE X_15X_3411')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03530(model, A, B, C)
            return model


        if __name__ == "__main__":
            here = Path(__file__).resolve().parent
            model_acute = build_model((5.0, 6.0, 7.0))
            model_acute.save(str(here / "x-03530.json"))
            write_center_svg(
                model_acute,
                here / "x-03530.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )